160 MARVELS OF FISH LIFE 
As stated, the tanks had been arranged in the 
stable-yard the night before. This arrangement con- 
sisted in the trestles being placed about six feet apart, 
and the boards laid upon them so as to make a plat- 
form. One tank was placed on the edge of this plat- 
form, and the second tank immediately behind it. 
These tanks are three feet long, two feet high, and 
eight inches and one foot respectively front to back. 
The bottom and the sides consist of wood; the front 
and back of quarter-inch plate glass. Half-way down 
one side is an inlet tap (to which is attached the hose), 
and two inches from the top of the other side is an 
outlet pipe. 
The narrower of the two tanks is placed to the 
front of the platform, and the hose connected to the 
inlet tap. The bottom of this tank is next covered 
with stones, gravel, sand, earth, dead leaves, or weeds, 
according to the kind of fish to be photographed. As 
soon as the tank is full of water, the fish showing the 
most typical shape is placed in it. At first he rushes 
about and stirs up the dirt, but soon settles down to 
sulk on the bottom. From now onwards a steady 
stream of water is kept flowing through the tank. 
The rest of the fish placed in the flat, box-like wooden 
tank are also kept in running water by connecting up 
the outlet pipe of the glass tank with the wooden tank. 
The safety of the fish being ensured, it is now pos- 
sible to spare a few minutes for breakfast. 
After breakfast the second tank is prepared. This 
